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Rail Sleeper Insert
One-stop Sleeper Inserts Factory in China Rail sleeper inserts are engineered components that provide secure, durable fastening points in concrete sleepers (ties) for rail fastening systems. These corrosion-resistant inserts maintain proper gauge and alignment while withstanding dynamic train...
Features
One-stop Sleeper Inserts Factory in China
Rail sleeper inserts are engineered components that provide secure, durable fastening points in concrete sleepers (ties) for rail fastening systems. These corrosion-resistant inserts maintain proper gauge and alignment while withstanding dynamic train loads.
Types of Sleeper Inserts
Standard Inserts
Material: Duplex stainless steel
Installation: Cast-in during sleeper production
Load Capacity: 25kN static / 15kN dynamic
Applications: Mainline tracks, yards
Post-Installed Inserts
Material: Galvanized carbon steel
Installation: Epoxy-anchored or mechanical expansion
Load Capacity: 20kN static / 12kN dynamic
Applications: Track repairs, retrofits
Special Application Inserts
Insulated: Nylon-coated for signalized tracks
High-Strength: For heavy haul/mining
Low-Profile: For ballastless track
Technical Specifications
| Model | Thread Size | Embed Depth | Torque Rating | Corrosion Resistance |
|---|---|---|---|---|
| SI-M24 | M24 | 120mm | 300 Nm | Class III (1000h salt spray) |
| SI-M30 | M30 | 150mm | 450 Nm | Class IV (2000h salt spray) |
| SI-E24 | M24 epoxy | 160mm | 250 Nm | Class II (500h salt spray) |
Key Features
Vibration Resistance - Locking thread designs
Precision Alignment - ±1mm positional tolerance
Thermal Compatibility - Matches concrete CTE
Easy Maintenance - Replaceable without sleeper damage
Installation Methods
Cast-In Installation
Position in mold with locator jig
Verify orientation and depth
Pour concrete (vibration <2mm amplitude)
Cure minimum 28 days before loading
Post-Installation
Drill hole (diameter +2mm of insert)
Clean with rotary brush and air
Inject epoxy (full cavity filling)
Set insert to proper depth
Cure per epoxy specifications
Our Products
Why Our Sleeper Inserts?
Proven Reliability - 10+ year track record
Precision Engineered - CNC-machined threads
Certifications - Meet major standards
Technical Support - Engineer consultations
Our Service Processes
Pre-sales Consultancy
1
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Confirmation of order
2
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Production
3
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Multi-Channel Shipping
4
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Confirmation of recei
5
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After-sale Services
6
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